JP4054040B2 - Molded simultaneous decorative molded product and method for producing molded simultaneous decorated molded product - Google Patents

Abstract

An in-mold decorated molded article wherein a coating layer is formed on a top surface of a transparent molded resin body which is flattened in a thickness direction of the body, thereby covering an edge part of the top surface adjacent to a side face on with a side gate mark formed, in order for the side gate mark not to be seen from the top surface of the molded resin body, and a decorative layer is formed on a bottom surface of a decorative layer of the transparent molded resin body. According to an in-mold decorated molded article, even when the transparent molding resin is employed with the result that an agreeable appearance is not achieved despite of a treatment for the side gate mark, the design property of the in-mold decorated molded article can be maintained, the gate mark of unacceptable appearance being not seen from the top surface.

Description

  The present invention relates to a molding simultaneous decorative molded product and a method for producing a molding simultaneous decorative molded product.

  In the simultaneous molding decoration method, a decoration sheet having a decoration layer is disposed on a base sheet between a first mold and a second mold of an injection mold, and the first mold and the second mold are arranged. This is a method in which a molding resin is injected into a molding space formed by closing a mold and an injection molded product is formed, and at the same time, a decorative layer is integrally bonded to the surface of the injection molded product.

  And recently, as disclosed in JP-A-6-99457, a decorative layer is provided on both sides as well as on one side of the molded resin body because of the need for improvement in design properties and physical properties of the molding resin surface. The molding simultaneous decoration method to be established is in the spotlight. In the case of such a simultaneous molding decoration method, the first decorative sheet and the second decorative sheet are arranged in both the first mold and the second mold of the injection mold, and the molding resin is molded into the mold. It is common to inject from the side gate portion of the mold.

  However, in the case of the above-mentioned simultaneous decoration method, the air around the molding space is covered with the first decorative sheet and the second decorative sheet, so that air generated during molding is difficult to escape, and sink marks and air accumulation occur. There is a problem that molding defects such as ink flow of the decorative layer easily occur due to the presence of the decorative layer on both sides of the molded product. For this reason, in order to prevent the occurrence of these molding defects, the gate has to be made considerably large.

  However, if the gate is enlarged, it becomes difficult to cut the gate accordingly, and it becomes difficult to clean the gate mark. Therefore, when the molding resin is transparent, a bad-looking side gate trace can be seen from the surface of the molded product, resulting in a problem that the design property is lowered.

  In the case of the above-mentioned simultaneous decoration method, the side surface of the molded product has a gradient with respect to the surface in order to prevent film breakage and ink cracks on both the first decorative sheet and the second decorative sheet. It is necessary to round the corners of the molded product. For this reason, if a large amount of side gate traces remain in the molded product, there is a problem that the side gate traces are easily visible from the surface of the molded product.

  An object of this invention is to provide the shaping | molding simultaneous decoration molded product with the good design property formed by shaping | molding simultaneous decoration shaping | molding.

  In order to achieve the above object, the simultaneous molding decoration device and the decorative sheet feeding device of the present invention are configured as follows.

That is, the first aspect of the present invention is a transparent molded resin body that is flat in the thickness direction and has a side gate mark formed on at least one side surface.
A coating layer that is provided on at least the upper surface of the molded resin body and covers an upper surface edge adjacent to the side surface on which the side gate trace is formed so that the side gate trace is not visible from the upper surface side of the molded resin body. When,
And a decorative layer provided on the lower surface of the molded resin body over substantially the entire surface.

  Further, in the second aspect of the present invention, the thickness direction dimension of the molded resin body of the side gate trace is 0.4 mm or more, the cut surface of the side gate trace on the side surface and the thickness direction of the molded resin body, Is an simultaneously molded decorative molded product of the first aspect in which the angle formed by the inner surface is 0 to 60 ° toward the inside of the molded resin body.

  According to a third aspect of the present invention, there is provided the molded simultaneous decorative molded product according to the first aspect, wherein the coating layer is formed on the entire upper surface edge adjacent to the side surface on which the side gate trace is formed.

According to a fourth aspect of the present invention, the coating layer is an imaginary line connecting an end of the coating layer on the side away from the side surface and a lower end of the side surface in a cross section in the direction orthogonal to the side surface and in the thickness direction of the molded resin body. The upper edge of the molded resin body is covered such that the angle formed by the virtual line and the thickness direction at the side edge of the molded resin body is 45 ° or more, and the upper surface of the molded resin body is It is a 1st aspect shaping | molding simultaneous decorating molded product formed so that the said side gate trace may not be visible from the side.

According to a fifth aspect of the present invention, the molded resin body is a resin panel having a screen portion, and the side gate trace is formed at a side position of the screen portion. It is a molded product.

In the sixth aspect of the present invention, the first decorative sheet having at least the first transfer layer is arranged such that the first transfer layer corresponds to a boundary portion between the side gate portion and the molding space portion. The second decorative sheet provided with the second transfer layer which is disposed on the first mold of the injection mold and which exists at least over substantially the entire surface of the molding space is disposed on the second mold of the injection mold. And
After the molding space is formed by closing the first mold and the second mold, a molding resin is injected into the molding space from a side gate portion to form an injection molded product, and at the same time, the injection The first decorative sheet and the second decorative sheet are integrally bonded so that the first transfer layer and the second transfer layer are respectively transferred to both surfaces of the molded product,
The injection molded product is taken out from the first mold and the second mold, and the side gate resin forming portion molded by the side gate portion is cut in a direction that is 60 ° or less with respect to the thickness direction of the injection molded product. It is a manufacturing method of a simultaneous molding decorative molded product which is made into a simultaneous molding decorative molded product.

7th aspect of this invention is a manufacturing method of the shaping | molding simultaneous decorating molded product of 6th aspect cut | disconnected in the direction which becomes substantially 0 degree with respect to the thickness direction of the said injection molded product.

  According to the molding simultaneous decorative molded product of the present invention, even if the molding resin is transparent and the side gate trace cannot be treated cleanly, the gate trace which does not look good is not seen from the upper surface of the molded resin body, and the design property is maintained. There is an effect that can be done. Moreover, according to the manufacturing method of the simultaneous molding decoration product of this invention, there exists an effect which can obtain the said simultaneous molding decoration product easily.

In addition, since the side gate trace is not visible from the upper surface, even if the angle between the cutting direction of the side gate and the thickness direction of the molded resin body is small, the appearance from the surface does not deteriorate and the side gate cutting process is simplified. Can do.
In addition, the simultaneously molded decorative molded product is used as, for example, a resin screen panel of a mobile phone device having a transparent window portion. Further, the transparent window portion of the screen panel is a portion where the user's line of sight is likely to gather, and the side gate trace becomes conspicuous. Therefore, by adopting the configuration of the present invention in a molded simultaneous decorative molded product in which a side gate mark is formed in the vicinity of the transparent window portion, the coating layer conceals the side gate mark, so that the side gate mark is conspicuous. Can be eliminated.

  Embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected about the same component.

  Hereinafter, the simultaneously decorated decorative molded product 10 according to an embodiment of the present invention will be described. As shown in FIG. 2, in the molded simultaneous decorative molded product 10 according to the present embodiment, the side gate trace 2 is not visible from the upper surface side at the edge of at least one surface of the transparent molded resin body 1. A covering layer 3 to be concealed is formed, and a decorative layer 4 is formed on the lower surface thereof.

  For example, as shown in FIG. 1, the molded simultaneous decorative molded product 10 is used for a screen panel of a mobile phone device having a transparent window portion 50. In the present embodiment, a screen panel 10a of a mobile phone device as the simultaneous molded decorative molded product 10 will be described as an example.

  The transparent molding resin used for the screen panel 10a of the cellular phone device includes acrylic resin, acrylonitrile styrene resin, acrylonitrile butadiene styrene resin, polycarbonate resin, polypropylene resin, polylactic acid resin, polystyrene resin, polyethylene resin, and any of these. It is composed of a polymer alloy of resin.

  A molded simultaneous decorative molded product 10 is a molded resin body 1 which is a thin plate-like body flat in the thickness direction and has a side gate mark formed by cutting a side gate resin forming portion on one side surface, and a molded resin body. 1 is provided with a coating layer 3 and a decoration layer 4 formed by simultaneous molding and transfer to an upper surface 1a and a lower surface 1b, respectively. In the molded resin body 1, the side surface 1c is inclined at an angle of approximately 60 ° or less with respect to the thickness direction so that the transfer decorative sheet for transferring the covering layer 3 and the decorative layer 4 is not torn. Moreover, it is the shape where the adjacent part of the edge part 20 of the side surface 1c, the upper surface 1a, and the lower surface 1b was rounded (refer FIG. 3). The reason why the side surface 1c of the molded resin body 1 is provided obliquely is to prevent film breakage and ink cracks that occur when the decorative sheet is extended during molding.

The decorative layer 4 is provided over substantially the entire molded resin body 1, and the uncolored portion for window formation in the central portion becomes the transparent window portion 50 of the screen panel 10a of the mobile phone device.
Since the molding simultaneous decorative molded product 10 is injection-molded using two decorative sheets for transferring the covering layer 3 and the decorative layer 4, as shown in FIG. A side gate portion for injecting resin is provided in a molding space portion that defines the outer shape of 10. Therefore, the side gate resin forming portion 19 for injecting the molten resin is attached to the side surface 1c immediately after being taken out from the mold. In the present embodiment, the side gate resin forming portion 19 is configured so that the screen panel 10 a of the mobile phone device is positioned in the vicinity of the side of the transparent window portion 50. The side gate resin forming portion 19 is cut obliquely along the side surface 1c of the molded resin body 1 (see FIG. 2). That is, cutting is performed at an angle of 0 to 60 ° with respect to the thickness direction of the screen panel 10a so that the cut surface of the side gate resin forming portion 19 is inclined.

  As shown in FIG. 5, the thickness of the transparent molded resin body 1 forming the main body of the screen panel 10a of the mobile phone device is obtained by adding a top surface thickness 21 of 0.2 to 2 mm to the sectional height 22 of the side gate trace. It is preferable to make it thick. The reason for increasing the thickness by the top surface thickness 21 from the cross-sectional height 22 is that when the coating layer 3 is provided by the first decorative sheet 11 as will be described later, a step occurs at the end 20 of the molded product due to the difference in thickness. This is because the covering layer 3 is easily cut by the step (see FIG. 2). Further, by providing the top surface thickness 21, it becomes difficult to see the side gate trace even when viewed from above the screen panel 10a. In addition, the base sheet 30 which comprises the 1st decorating sheet 11 may remain on the coating layer 3 without peeling.

  The side gate trace 2 has a sectional height dimension 22 in the thickness direction of the molded resin body of 0.4 mm or more, and an angle 23 formed by the cut surface of the side gate resin forming portion 19 and the thickness direction of the molded resin body is 0-60. To be °. The reason why the cross-sectional height 22 is set to 0.4 mm or more is to prevent molding defects such as sink marks and insufficient filling of injection resin and ink flow. In addition, as described above, the reason for cutting the side gate trace along the side surface 1c of the molded resin body 1 with an inclination angle 23 of 0 to 60 ° is that the simultaneously molded decorative molded product 10 is formed at the end 20 of the molded product. This is to make it difficult to see the side gate trace 2 even from the vicinity of the area.

  The shape 24 of the side gate trace 2 is not particularly limited, such as a square shape or a circular shape. Further, the width 25 (see FIG. 4) of the side gate trace 2 may be appropriately set according to the size of the simultaneously molded decorative molded product 10.

  As described above, the coating layer 3 and the decorative layer 4 provided on the upper surface 1a and the lower surface 1b of the molded resin body 1 are formed by simultaneous molding transfer. As shown in FIG. 3, the coating layer 3 is provided from the side edge of the upper surface 1a of the molded resin body 1 to the side surface 1c, and the decorative layer 4 is provided from the lower surface 1b of the molded resin body 1 to the side surface 1c. Immediately after the injection molding, it extends to the side gate resin forming portion 19. Therefore, as shown in FIG. 4, the decorative layer 4 and the covering layer 3 are not formed on the side gate trace 2 obtained by cutting the side gate resin forming portion 19, and the molded resin body 1 is exposed. Therefore, when viewed from the side of the molded resin body 1, the side gate trace 2 is clearly visible.

  The covering layer 3 has a function of covering at least the side gate trace 2 of the transparent molded resin body as viewed from the upper surface of the screen panel 10a, and is provided within a range in which the side gate trace 2 can be covered. That's fine. For example, as shown in FIG. 6A, it may be formed on the entire upper surface edge adjacent to the side surface on which the side gate trace 2 is formed, or as shown in FIG. That is, it may be formed on the upper surface edge adjacent to the side surface where the side gate trace is not formed. Further, as shown in FIG. 6C, it can be formed only in the vicinity where the side gate trace 2 is provided, and the width dimension along the side surface thereof is substantially equal to the dimension along the side surface of the side gate trace. That is all you need. That is, it should just be formed in the area | region which can cover the side gate trace of the transparent molded resin body 1 at least.

  Further, as shown in FIG. 2, the width H of the covering layer 3 is a range from a position 39 where the side gate trace 2 cannot be seen even when viewed from an oblique upper surface of 45 ° to the end 20 of the molded product. It is preferable to do. That is, in the cross section in the direction perpendicular to the side surface and in the thickness direction of the molded resin body, the coating layer 3 is an imaginary line connecting the end 3a on the side away from the side surface 1c of the molded resin body 1 and the lower side surface 4a of the molded resin body 1. When 40 is assumed, it is preferable to cover the upper edge so that the angle α formed by the virtual line and the thickness direction of the molded resin body 1 is 45 ° or more. By configuring the covering layer 3 to have the above width dimension, the side gate marks can be prevented from being seen from the upper surface side of the molded resin body.

  Further, the formation pattern of the covering layer 3 does not have to be mainly intended for decorating the screen panel 10a, but is mainly intended to conceal the side gate trace 2 formed on the side surface 1c. May be. Specifically, the formation pattern of the coating layer 3 is not limited to the satin pattern illustrated in FIG. 1, but reflects an opaque coloring pattern, a translucent coloring pattern, and light incident on the coating layer 3. Such a pattern (for example, a hologram pattern or a metal foil pattern), a pattern that scatters light incident on the coating layer 3, or the like can be used. The formation pattern of the decoration layer 4 is not particularly limited. For example, when the color is similar to that of the coating layer 3, the coating layer 3 is not noticeable when viewed from the upper surface 1a of the screen panel 10a.

  Examples of a method for providing the covering layer 3 and the decorative layer 4 on the transparent molded resin body 1 include an insert molding method using the first decorative sheet 11 and the second decorative sheet 12. As an example of the 1st decorating sheet 11 and the 2nd decorating sheet 12, as shown in FIG. 7, the transfer layer 35 which forms the coating layer 3, the decorating layer 4, etc. on the base sheet 30, and the contact bonding layer 34 Etc. are sequentially laminated, and these layers are formed on the molded resin body 1 as they are. If the transfer layer 35 has adhesiveness, the adhesive layer 34 may be omitted.

  Another example of the method of providing the covering layer 3 and the decorative layer 4 on the transparent molded resin body 1 is a simultaneous molding method using the first and second decorative sheets 11 and 12 as a transfer material. it can. As an example of the transfer material, as shown in FIG. 8, a release layer 31, a release layer 32, a transfer layer 35 that forms the covering layer 3, the decorative layer 4, and the like are sequentially formed on the base sheet 30. After being bonded to the molded resin body 1, the base sheet 30 and the release layer 31 are peeled and removed, and a laminate of the release layer 32, the transfer layer 35, and the adhesive layer 34 is formed on the molded resin body 1. It is formed.

  In addition, when the base sheet 30 has releasability, the release layer 31, when the transfer layer 35 has releasability, the release layer 32, and when the transfer layer 35 has adhesiveness, the adhesive layer 34, respectively. It may be omitted. In addition, when the adhesiveness between each layer is insufficient, an arbitrary anchor layer (not shown) may be provided as necessary, and these layers may be securely adhered to each other.

  The material of the base sheet 30 is preferably a polyester resin, a vinyl chloride resin, an acrylic resin, a polycarbonate resin, a polypropylene resin, a polyethylene resin, a polyurethane resin, a polystyrene resin, an acetate resin, a polyamide resin, or the like. .

  The film thickness of the base sheet 30 is preferably 5 μm to 5 mm. This is because if the film thickness is less than 5 μm, there is a problem that the transfer layer 35 cannot be supported because the sheet is not rigid, and if it is thicker than 5 mm, the sheet is too rigid and difficult to handle.

  The formation method of the base sheet 30 may be a general film forming method such as extrusion molding, calendar molding, or casting. Note that the base sheet 30 may be subjected to easy adhesion treatment such as corona discharge treatment, plasma treatment, and easy adhesion primer coating on the surface on the side where the printing layer is to be formed, if necessary.

Examples of the material of the release layer 31 may include a melamine resin, a silicon resin, a fluorine resin, an alkyd resin, and a phenol resin. A preferable material is appropriately selected depending on the release property from the release layer 31. select.

  The film thickness of the release layer 31 is preferably 0.5 μm to 50 μm. If the film thickness is less than 0.5 μm, there is a problem that sufficient releasability cannot be obtained, and if it is more than 50 μm, there is a problem that it is difficult to dry after printing.

  The method for forming the release layer 31 may be a method such as gravure printing, offset printing, or screen printing, or a method such as painting, dipping, or reverse coater.

  As the material of the release layer 32, acrylic resin, vinyl resin, urethane resin, polyester resin, polypropylene resin, polyethylene resin, polystyrene resin, polycarbonate resin, polyvinyl alcohol resin, acetate resin, polyamide Based on the release property of the release layer 31, a preferable material is appropriately selected.

  The thickness of the release layer 32 is preferably 0.5 μm to 50 μm. If the film thickness is less than 0.5 μm, there is a problem that sufficient peelability cannot be obtained, and if it is more than 50 μm, there is a problem that it is difficult to dry after printing.

  The method for forming the release layer 32 may be a method such as gravure printing, offset printing, or screen printing, or a method such as painting, dipping, or reverse coater.

  The transfer layer 35 is a layer on which a pattern to be decorated such as a wood grain pattern, a stone pattern, a cloth pattern, a character, a geometric pattern, a solid pattern, etc. is formed. It functions as a decorative layer 4 that is transferred to the covering layer 3 that conceals and the lower surface 1b of the molded resin body 1 to decorate the screen panel 10a. Note that a plurality of transfer layers 35 may be formed on one surface of one screen panel 10a. Further, the transfer layer 35 may be provided with a metal film layer as necessary. In this case, the metal film layer may be entirely or patterned.

  Examples of the material for the transfer layer 35 include, but are not limited to, polyester resins, acrylic resins, vinyl resins, nitrified cotton resins, urethane resins, and chlorinated rubber resins. In the case of a metal film layer, aluminum, chromium, copper, nickel, indium, tin, silicon oxide, and the like can be given, but there is no particular limitation.

  The thickness of the transfer layer 35 is preferably 0.5 μm to 50 μm. This is because when the film thickness is less than 0.5 μm, there is a problem that sufficient concealing property cannot be obtained, and when it is more than 50 μm, there is a problem that it is difficult to dry after printing. However, in the case of a metal film layer, 150 to 1200 mm is preferable. This is because if the film thickness is less than 150 mm, there is a problem that sufficient concealing property cannot be obtained, and if it is more than 1200 mm, there is a problem that cracks are likely to occur.

  The transfer layer 35 may be formed by a method such as gravure printing, offset printing, or screen printing, or by a method such as painting, dipping, or reverse coater. In the case of a metal film layer, there are methods such as vacuum deposition and plating.

  The material of the adhesive layer 34 is acrylic resin, vinyl resin, urethane resin, polyester resin, polypropylene resin, polyethylene resin, polystyrene resin, polycarbonate resin, polyvinyl alcohol resin, acetate resin, polyamide. Based on the adhesiveness to the molding resin, a preferable material is appropriately selected.

  The film thickness of the adhesive layer 34 is preferably 0.5 μm to 10 μm. If the film thickness is less than 0.5 μm, there is a problem that sufficient adhesion cannot be obtained, and if it is more than 10 μm, there is a problem that it is difficult to dry after printing.

  The method for forming the adhesive layer 34 may be a method such as gravure printing, offset printing, or screen printing, or a method such as painting, dipping, or reverse coater.

  Next, a method for manufacturing the screen panel according to the present embodiment will be described.

  The screen panel 10a is in a state in which two decorative sheets are sandwiched between the two molds 15 and 16, and the molten resin is injected into the molding space 17 provided between the two molds 15 and 16. Is formed. The mold is composed of a movable mold 15 which is an example of a first mold and a fixed mold 16 which is an example of a second mold. The movable mold 15 is movable of a molding simultaneous injection apparatus (not shown). It is fixed to the board and moves so as to be detachable from the fixed mold 16. The fixed mold is fixed to a fixed plate of a molding simultaneous injection device (not shown).

  The movable mold 15 is formed in a square shape or the like, and includes a reference surface 13 that is in contact with the fixed mold 16 at its peripheral end. As shown in FIG. 11, a concave portion 14 having a shape suitable for the outer shape of the molded product is formed in the inner portion surrounded by the reference surface 13.

  On the other hand, the fixed mold 16 is formed in a rectangular shape having a width and a height corresponding to the movable mold 15, and includes a reference surface 13 that is a flat surface that contacts the movable mold 15. As shown in FIG. 12, a concave portion 14 having a shape suitable for the outer shape of the molded product is formed in the inner portion surrounded by the reference surface 13.

  Then, the first decorative sheet 11 and the second decorative sheet 12 are sandwiched so that the reference surface 13 of the movable mold 15 and the reference surface 13 of the fixed mold 16 are superposed so as to be in contact with each other. A molding space 17 is formed between the decorative sheet 11 and the second decorative sheet 12, and a part of the concave portion 14 of the fixed mold 16 serves as a side gate part 19a.

  The height, width and thickness of the molding space portion 17 correspond to the predetermined height, width and thickness of the molded product, and the molding resin 18 is injected into the molding space portion 17 and solidified as follows. As a result, it is possible to obtain a molded simultaneous decorative molded product 10 having a predetermined size.

  That is, the first decorative sheet 11 is set on the movable mold 15 side and the second decorative sheet 12 is set on the fixed mold 16 side between the movable mold 15 and the fixed mold 16 that are arranged opposite to each other. After that, the movable mold 15 and the fixed mold 16 are clamped (see FIG. 9). At this time, the 1st decorating sheet 11 is arrange | positioned so that it may be located in the boundary part of the shaping | molding space part 17 and the side gate part 19a.

  Thereafter, as shown in FIG. 10, molten molding resin 18 is injected from the side gate portion 19 a between the first decorative sheet 11 and the second decorative sheet 12 in the formed molding space portion 17. After the molding resin 18 injected into the molding space 17 is cooled and solidified, the movable mold 15 and the stationary mold 16 are opened, and the solidified molding resin 18 is taken out. In the molding resin 18, a screen panel 10a corresponding to the molding space portion 17 and a side gate resin forming portion 19 corresponding to the side gate portion 19a are integrally molded. Moreover, the transfer layer 35 of the 1st decorating sheet and the 2nd decorating sheet is transcribe | transferred to the side edge of the screen panel 10a.

  Thereafter, the movable mold 15 and the fixed mold 16 are opened, the molding resin 18 is taken out, and then the side gate resin forming portion 19 and the screen panel 10a are cut. At this time, it cut | disconnects in the direction used as 60 degrees or less with respect to the thickness direction of the screen panel 10a along the inclination of the screen panel 10a side surface.

  Next, a modification of the screen panel 10a according to the present embodiment will be described.

  The screen panel 10b according to the modification generally has the same configuration as the screen panel 10a of FIG. 1, but the cutting direction when the side gate resin forming portion is cut from the screen panel is different. As shown in FIG. 13, the screen panel 10 b according to the modification is obtained by cutting the side gate resin forming portion 19 in the thickness direction of the screen panel 10 b to simplify the cutting process of the side gate resin forming portion 19. is there.

  That is, as shown in FIG. 14, the thickness direction of the screen panel does not align the side gate resin forming portion 19 formed integrally with the molding resin taken out from the mold along the direction of the side surface 1c of the screen panel 10b. Cut so that the angle between the two becomes 0 degrees. As shown in FIG. 15, the screen panel cut in this way has a shape in which the side gate trace 2a protrudes from the side surface 1c when viewed from the side surface 1c, but the coating layer 3 is provided from the upper surface 1a side. It is not visually recognized by being obscured.

  In other words, the screen panel 10b according to the modified example is covered with the side gate mark 2a by the covering layer 3, so that the cut surface can be molded without being inclined and cut along the side surface of the simultaneously molded decorative molded product 10. The design property seen from the upper surface of the simultaneous decorative molded product can be maintained. The cutting process can be simplified by cutting at an angle close to the thickness direction of the simultaneously decorated decorative molded product.

Example 1
A release layer made of melamine resin is formed on a base sheet made of polyethylene terephthalate film (easy adhesion treatment) with a thickness of 38μm, and then a vapor deposition anchor layer is formed by gravure printing using urethane resin-based two-component curable ink. did. After heat treatment at 120 ° C. for 5 minutes, a first transfer layer made of an aluminum metal film having a thickness of 600 ± 50 mm is patterned by vacuum deposition, and then an adhesive layer made of vinyl chloride / vinyl acetate copolymer resin is gravure-printed. It formed by the method and the 1st decorating sheet was obtained. Similarly, the 2nd decorating sheet in which the 2nd transfer layer was formed was obtained.

  The obtained first decorative sheet is placed in one injection mold so that the first transfer layer covers the end of the molded product in the vicinity of the side gate portion, and the second decorative sheet is placed in the other injection mold. After the resin is placed, the molding resin made of acrylonitrile butadiene styrene copolymer resin is injected, and after cooling and solidifying, the first and second decorative sheets and the molding resin are integrated, and then the base sheet is peeled off. By cutting the side gate resin forming portion along the side surface of the screen panel, a screen panel of a mobile phone device which is a molded and decorated decorative product was obtained. The first transfer layer of the first decorative sheet is transferred to a portion adjacent to the side surface on which the side gate resin forming portion is formed, and covers the upper edge so that the side gate resin forming portion cannot be seen when viewed from the upper surface. It was transferred as a coating layer.

  The obtained screen panel of the mobile phone device has a transparent molded resin thickness of 1.1 mm, a side gate trace cross-sectional height of 0.8 mm, a top surface thickness of 0.3 mm, and a side gate trace cross-section inclination angle 23 is The shape of the side gate trace was 35 °, and the width of the side gate trace was 10.0 mm.

  The formation pattern of the coating layer was formed from the end of the molded product to 5.0 mm, the coating layer concealed the side gate trace, and the side gate trace was not visually recognized even when viewed obliquely.

(Example 2)
The first transfer layer is patterned by gravure printing method using acrylic resin ink on an acrylic film with a thickness of 125μm, and then a vinyl chloride vinyl acetate copolymer resin adhesive layer is formed by gravure printing method. A sheet was obtained. Similarly, the 2nd decorating sheet in which the 2nd transfer layer was formed was obtained.

  The obtained first decorative sheet is placed in one injection mold so that the first transfer layer covers the end of the molded product at the side gate, and the second decorative sheet is placed in the other injection mold. After placement, a molding resin made of polycarbonate is injected, cooled and solidified to integrate the first and second decorative sheets and the molding resin, and then the side gate resin forming portion is cut along the side of the screen panel By doing so, a screen panel of a cellular phone device which is a simultaneously molded decorative molded product was obtained. The first transfer layer of the first decorative sheet is transferred to a portion adjacent to the side surface on which the side gate resin forming portion is formed, and covers the upper edge so that the side gate resin forming portion cannot be seen when viewed from the upper surface. It was transferred as a coating layer.

  The screen panel of the obtained mobile phone device has a transparent molded resin thickness of 1.4 mm, a side gate trace cross-sectional height of 1.1 mm, a top face thickness of 0.3 mm, and a side gate trace cross-section inclination angle 23 is The shape of the side gate trace was 10 °, and the width of the side gate trace was 15.0 mm.

  And the formation pattern of the coating layer was formed from the end of the molded product to 4.5 mm, the coating layer concealed the side gate trace, and the side gate trace was not visually recognized even when viewed obliquely.

  In addition to the screen panel of a mobile phone device, the molded and simultaneously decorated molded product of the present invention is an upper cover and a lower cover of a mobile phone device, a surface part and an exterior part of an electronic application toy, an input panel of a household appliance, and an automobile interior and exterior It can be used for panels and outer frames of pachinko machines.

  It is to be noted that, by appropriately combining any of the various embodiments, the effects possessed by them can be produced.

  Although the present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as being included therein, so long as they do not depart from the scope of the present invention according to the appended claims.

It is an external appearance perspective view which shows the screen panel of the mobile telephone apparatus which is a usage example of the shaping | molding simultaneous decoration molded product concerning embodiment of this invention. It is II-II sectional drawing of the screen panel of the mobile telephone apparatus of FIG. FIG. 3 is a cross-sectional view taken along the line III-III of the screen panel of the mobile phone device of FIG. 1. It is an expansion perspective view of the side gate trace part of the screen panel of the mobile telephone apparatus of FIG. It is a figure which shows the state before the side gate cutting | disconnection of the screen panel of the mobile telephone apparatus of FIG. It is a figure which shows the modification of the formation position of the coating layer formed in the screen panel of FIG. It is a figure which shows the modification of the formation position of the coating layer formed in the screen panel of FIG. It is a figure which shows the modification of the formation position of the coating layer formed in the screen panel of FIG. It is sectional drawing which shows an example of the 1st decorating sheet which concerns on embodiment of this invention, or a 2nd decorating sheet. It is sectional drawing which shows the other example of the 1st decorating sheet which concerns on embodiment of this invention, or a 2nd decorating sheet. It is a figure which shows notionally an example of the simultaneous molding decoration method which concerns on embodiment of this invention, and is a figure which shows the state which closed the movable metal mold | die and the stationary mold. It is sectional drawing which shows notionally an example of the simultaneous molding decoration method which concerns on embodiment of this invention, and is a figure which shows the state which inject | pours molding resin from a side gate. It is sectional drawing which shows an example of the movable metal mold | die of the injection mold of the simultaneous molding decorative molded product which concerns on embodiment of this invention. It is sectional drawing which shows an example of the fixed metal mold | die of the injection mold of the simultaneous decorating molded product which concerns on embodiment of this invention. It is sectional drawing in the part of the side gate of the screen panel of the mobile telephone apparatus concerning a modification. It is a figure which shows the state before the side gate cutting | disconnection of the screen panel of the mobile telephone apparatus of FIG. It is an expansion perspective view of the side gate trace part of the screen panel of the mobile telephone apparatus of FIG.

Claims (7)

A transparent molded resin body (1) that is flat in the thickness direction and has side gate marks (2, 2a) formed on at least one side surface (1c);
An upper surface edge portion that is provided on at least the upper surface (1a) of the molded resin body and that is adjacent to the side surface (1c) on which the side gate trace is formed is formed on the side gate trace from the upper surface side of the molded resin body (1). A coating layer (3) for covering (2, 2a) so as not to be visible;
The molded resin body (1) of the lower surface (1b) the decorative layer provided over substantially the entire surface (4) and, mold decorating molded article comprising a. A thickness direction dimension of the molded resin body of the side gate trace (2, 2a) is 0.4 mm or more, a cut surface of the side gate trace (2, 2a) on the side surface, and a thickness direction of the molded resin body, The molded simultaneous decorative molded product according to claim 1, wherein an angle formed between the inner side and the inner side of the molded resin body is 0 to 60 °.   The molding simultaneous decorative molding according to claim 1, wherein the coating layer (3) is formed on the entire upper surface edge adjacent to the side surface (1c) on which the side gate mark (2, 2a) is formed. Goods. The coating layer (3) includes an end (3a) of the coating layer on the side away from the side surface (1c) and a lower end of the side surface (in the cross section in the direction perpendicular to the side surface and in the thickness direction of the molded resin body (1). 4a) is assumed, an angle α formed by the virtual line (40) and the thickness direction at the side edge of the molded resin body (1) is 45 ° or more. The upper surface edge part of the resin body (1) is covered, and the side gate mark (2, 2a) is formed so as not to be seen from the upper surface side of the molded resin body (1). Simultaneously molded decorative molded products. The molded resin body (1) is a resin panel provided with a screen portion (50), and the side gate mark (2, 2a) is formed at a lateral position of the screen portion (50). Item 10. A simultaneously decorated and molded product according to item 1. In the first decorative sheet (11) having at least the first transfer layer (35), the first transfer layer (35) corresponds to a boundary portion between the side gate portion (19a) and the molding space portion (17). so that position and placed in injection mold a first mold (15), a second having a second transfer layer which is present over substantially the entire surface of at least before Symbol molding space (17) (35) Place the decorative sheet (12) in the second mold (16) of the injection mold,
After forming the molding space (17) by closing the first mold (15) and the second mold (16), the side space (17a) is inserted into the molding space (17). wherein as said first transfer layer to simultaneously form the injection molded article the injection molded article both surfaces of the molded resin injected into (35) and the second transfer layer (35) are respectively transferred first decorated sheet ( 11) and the second decorative sheet (12) are integrally bonded,
The injection molded product is taken out from the first mold (15) and the second mold (16), and the side gate resin forming portion (19) formed by the side gate portion (19a) is used as the thickness of the injection molded product. A method for producing a molded simultaneous decorative molded product, which is cut in a direction of 60 ° or less with respect to the direction to obtain a molded simultaneous decorated molded product.   The method for producing a simultaneously molded decorative molded product according to claim 6, wherein the molded product is cut in a direction that is substantially 0 ° with respect to the thickness direction of the injection molded product.

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